Gauging device



May l0, 1949. J. A. TRAME, JR

GAUGING DEVICE Filed Aug. 1'?, 1945 INVENTOR gmx- BY ATTORNEYM /Gmllllllilu Patented May 10, 1949 GAUGING DEVICE Joseph A. Trame, Jr., Dayton, Ohio, assignor to The Sheield Corporation, Dayton, Ohio, a corporation of Ohio Application August 17, 1945, Serial No. 610,966

4 Claims.

.This invention relates to gauging apparatus for accurately gauging sizes of measured parts of various dimensions.

One object of the invention is the provision of a gauging apparatus for gauging a dimension of a workpiece and embodying a plurality of work engaging members which are readily adjustable with respect to one another and with respect to a common carrier to provide variation in spacing for Workpieces of different sizes while maintaining the axis of the workpiece in a definite position with respect to the support on which the carrier is arranged.

Another object is the provision of a gauging apparatus having a series of movable carriers adjustably mounted on a support to provide variation in the spacing of the carriers, the carriers moving in direction transverse of the direction in which they are adjustable and each having provision for connection to a pair of bars having Work engaging portions so that the b-ars may be readily set in different positions with respect to the carrier to permit gauging of dimensions of different sizes.

Another object is the provision of a gauging apparatus having a support on which workpieces of diierent sizes can be mounted, a series of movable carriers being adjustably mounted on the support and each carrier providing for the convenient adjustment and support of a plurality of work engaging members, the gauging parts being compactly arranged for close grouping of the carriers.

Other objects and advantages of the invention will be apparent from the following description the appended claims, and the accompanying drawing, in which:

Fig. 1 is a perspective view of gauging apparatus embodying the present invention;

Fig. 2 is a top plan view of one of the gauging assemblies, the back portion of the support being shown in horizontal section;

Fig. 3 is a vertical section on the line 3-3 of Fig. 2;

Fig. 4 is a vertical section on the line 4 4 ofA Fig. 2;

Fig. 5 is a detailed view showing a pair of adjacent work engaging arms on opposed gauging assemblies; and

Fig. 6 is a fragmentary front elevation of several of the work engaging portions of different gauging assemblies.

Referring more particularly to the drawing, in which the same parts are designated in the various views by the same reference numerals, I0

represents a support having a horizontal base portion II and an upstanding back member I2. The base portion carries a, movable work holding slide I3 on which a shell or other workpiece to be gauged )can be arranged so that its axis extends vertically in a particular form of gauging apparatus herein illustrated. The slide I3 can be moved out from the back member, the work applied to the slide and the slide then moved towards the back member into Work gauging position, in the gauging operation. The workpiece may take any one of a large number of -shapes or forms, although the invention as herein illustrated, is in a form particularly adapted for gauging external measurements of an elongated workpiece, at different points along the workpiece axis.

Secured to the back member I2 are two spaced guide strips I5 forming a slideway in which an adjustable block IB is arranged. A thumb screw I1 extends through a vertical slot I8 in the back member and is threaded in the block I6, as shown in Fig. 2, so the block can be fixed on the support in any desired position of Iadjustment at different heights above the base portion II.

The block I6 carries a movable carrier I9 by means of a pair of parallel spaced spring blades 20. Ofne end of each of these blades is fixed to the block I6, and the other end is xed to the carrier I9, thus mounting the carrier for yielding movement in the direction of its length. A projection 2l on the carrier is arranged between a pair of spaced lugs 22 on the block and is normally held against a stop screw 23 carried by one of these lugs by means of a spring pressed stud 24 in the other lug.

The carrier I9 is fixed in an adjustable manner to two bars 25 and 26 by means of a pair of screws 21 and 28 which project through openings in the carrier and in the bar 25 and are threaded in the bar 26. The bar 26 has additional threaded portions as shown at 29, it being understood that each of the screws 21 and 28 can be engaged with one or the other threaded portions in the bar. The upper portions of the screws pass through elongated slots 30 in the carrier and through an elongated slot 3| in the bar 25. The upper and lower sides of the bar 25 have projecting portions that intert with corresponding grooves in the lower side of the carrier I9 and the upper side of the bar 26, as will be apparent from Fig. 4. As shown in Figs. 3 and 4, the two bars are of comparatively small cross sectional area, both being elongated in a direction parallel to the length of the carrier. It will be apparent that, by loosening-the screws 21 and 28, the bar 25 can be moved to either the right or the left within the limits permitted by the slot 3l, and the bar 26 can also be adjusted to either the right or the left as shown in Fig. 2, within the limits of the slot-l 39. When the screws 21 and 28 are tightened, both bars will be fixed securely on the carrier and be yieldingly movable with the carrier in the direction of the length oi the bars.

Projecting from one end of the arm 25 is a ieg t3 having a work engaging tip Sii adapted to contact one side oi a workpiece which has been illustrated at 35. The other side of the workpiece is engaged by a work gauging tip 33 on a movable part 3'! which is carried by a pair of parallel spring blades 38 on a projecting portion 39 of the bar 26. The manner in which the part 3i is mounted for yielding movementfon the'bar 2t is similar to the mounting of the carrier i9 on the block I6. This part llhas an operative connection to a movable plunger t2 of a gauging device 4U-which is held by screws M on the bar 2G. The

' if the dimension to be checked by the two work engaging portions of the two bars is 'less than thatindicated,'thecarrier 'i9 can be removed by loosening its connections to the spring blades 2Q, the screws 2l andA 28 can be loosened, andthe bar 25 moved towards the left, the bar 2G being moved a corresponding distance towards the right with respect to carrier i9, so that the work:- piece of smaller size can be gauged with its axis in exactly the same position.

Different points along the length of the Worlepiece can .be gauged, inasmuch as there are a .series of blocks similar to the block it, and 4a `series of gauging unitsone carried by each block. Thus, as shownin Fig. l, a vertical series of three Aof .these gauging AunitsA, B, and C are held on carriers arrangedbetween the guide strip i5 at oneiside of the apparatus. .At the other side of the apparatus are addi-tional guide strips and M providing the support for one or morergauging units such'asthe unit D, similar-to the gaug-l .ing unit first-described although its gauging tips are arranged at the left instead of the right of the unit. Since the gauging unitsare or a symvmetrical form as viewed from the front of` the apparatus, it will be apparent that the various parts of these units are interchangeable merely by inverting them, whether theyfare used in the right-hand series or-left-hand series.

The arm-33 that projects from the bar 25 isof `reduced. vertical dimension-as compared with the bar itself, and the-vertical dimensionoi the part lSi and the projecting portion vof the bar 2t is also of reduced size as compared todoar 2t so that even if a pair oi'superposed gauging unitsV are close1,oge'ther as indicatedatiA and B, Fig. 6, it lis possible to checky a dimension between' the central planes of these two gauging unitsV by the gauging .unit D in the right-'hand series of gauging units with its central plane arranged between the units vA andB.

Whilev the form of apparatus herein described 'constitutes a preferred embodiment of the invention, it is to be understood that' the invention is not limited to this precise formof-v apparatus, and

Athat changes may be made therein Lwithout 'de- 4 parting from the scope of the invention which is defined in the appended claims.

What is claimed is:

l. Gauging apparatus comprising a support having means for holding a workpiece to be gauged, an elongated carrier, means mounting said carrier on said support for yielding movement in the direction ofthe length of the carrier, a pair oi bars extending along said carrier so that a bar extends between another bar and the carrier, said bars and carrier having interntting longitudinal grooves and projections, means eX- tending from a bar through another bar and to the carrier and fixing both said bars to said carrier and providing for independent longitudinal adjustment of said bars with respect to said carrier and with respect to one another, a gauging device on one of said bars, a work engaging member yieldingly mounted-on said one bar and having an operable connection to said gauging device, and a projection on the other bar providing a work engagingmember, whereby said bars are adjustable to provide for gauging workpieces of various sizes while maintaining the work axis in fixed position with respect to said support.

2. Gauging apparatus comprising a support having means for holding a workpiece'to -be gauged, an eiongated carrier, means mounting said carrier on said support for yielding movement in the direction ci the'lengthof the carrier, a pair oi bars extending along said carrier, one or said bars having projections extending longitudinally thereof and interflt'ting with correspondingly formed grooves in said carrieiand in the other said bar, means fixing said bars to said carrier and providing for independent'longitudinal adjustment of said bars with respect to said carrier and with respect to one another, a gauging device on one bar,a work engagingmember yieldably mounted on said one par and having an operable connection to said gauging device, and an arm projecting from the other bar providing a work engaging member, whereby said bars are adjustable to provide ior gauging workpieces ci various sizes while maintaining the work axis in Xed position with respect to said support.

Gauging lapparatus lcomprising a support having means for holding a workpiece to be gauged, elongated carrier, means'mounting said carrier on said support for yielding movement in the direction of the length of the carrier, a pair or" bars extending along said carrier,.one of said bars being arrangedbetween the carrier and the second barand having a passage elongated in the direction of thebar length, means extending through said passage for adjustably iiXing said bars to said carrier andproviding for independent longitudinal adjustment of said bars with respect to said carrier and with respect to one another, a gauging device on one of said bars and a work engaging memberV yieldingly mounted on said bar and having an operable connection to said gauging devi-ce, and a projection on the other bar providing a work engaging member, whereby said bars are adjustable .to provide for gauging workpieces of various sizes whilemaintaining the work axis in fixed position with respect to said support.

e'. Gauging apparatus vcomprising a support having means for holding 'a workpiece to be gauged, an elongated carrier, means mounting said carrier on said support for yielding movement in the direction of the lengthV ofthe carrier, a pairof barsextending along vsaid carrier, one

of said bars having projections extending longitudinally thereof and intertting with correspondingly formed grooves in said carrier and in the other said bar, means extending through said one bar and fixing said bars to said carrier and providing for independent longitudinal adjustment of said bars with respect to said carrier and with respect to one another, a gauging device on one bar and a Work engaging member yieldingly mounted on said one bar and having an operable connection to said gauging device, and an arm projecting from the other bar providing a Work engaging member, whereby said bars are adjustable to provide for gauging workpieces of various sizes while maintaining the work axis in fixed position with respect to said support.

JOSEPH A. TRAME, JR.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

